DE3069231D1 - Control of the atmosphere in an enclosure - Google Patents

Control of the atmosphere in an enclosure

Info

Publication number
DE3069231D1
DE3069231D1 DE8080902162T DE3069231T DE3069231D1 DE 3069231 D1 DE3069231 D1 DE 3069231D1 DE 8080902162 T DE8080902162 T DE 8080902162T DE 3069231 T DE3069231 T DE 3069231T DE 3069231 D1 DE3069231 D1 DE 3069231D1
Authority
DE
Germany
Prior art keywords
enclosure
error values
atmosphere
valves
control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE8080902162T
Other languages
German (de)
Inventor
Mark Douglas Crittenden
Graeme John Lowe
Neil Stuart Mclaren
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Commonwealth of Australia
Original Assignee
Commonwealth of Australia
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Commonwealth of Australia filed Critical Commonwealth of Australia
Application granted granted Critical
Publication of DE3069231D1 publication Critical patent/DE3069231D1/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/20—Control of fluid pressure characterised by the use of electric means
    • G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
    • G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
    • G05D16/2026—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means with a plurality of throttling means
    • G05D16/2046—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means with a plurality of throttling means the plurality of throttling means being arranged for the control of a single pressure from a plurality of converging pressures
    • G05D16/2053—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means with a plurality of throttling means the plurality of throttling means being arranged for the control of a single pressure from a plurality of converging pressures the plurality of throttling means comprising only a first throttling means acting on a higher pressure and a second throttling means acting on a lower pressure, e.g. the atmosphere
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L1/00—Enclosures; Chambers
    • B01L1/04—Dust-free rooms or enclosures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/0001—Control or safety arrangements for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/0001—Control or safety arrangements for ventilation
    • F24F2011/0002—Control or safety arrangements for ventilation for admittance of outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/0001—Control or safety arrangements for ventilation
    • F24F2011/0002—Control or safety arrangements for ventilation for admittance of outside air
    • F24F2011/0005—Control or safety arrangements for ventilation for admittance of outside air to create underpressure in a room, keeping contamination inside
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/40—Pressure, e.g. wind pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/40—Damper positions, e.g. open or closed

Abstract

A method of controlling an atmosphere in an enclosure (12) to which gas (40) is being supplied comprises the steps of monitoring (53) atmospheric pressure within the enclosure and the rate of gas flow to (52) or from the enclosure, comparing these parameters (62) with adjustable set points to obtain error values and adjusting inflow (50) and exhaust (51) valves for the enclosure in dependence upon the error values. A preferred method includes the intermediate steps of deriving from the error values, target positions for the valves. Also disclosed is an installation incorporating a control system for carrying out the method.
DE8080902162T 1979-11-09 1980-11-10 Control of the atmosphere in an enclosure Expired DE3069231D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPE127979 1979-11-09
PCT/AU1980/000084 WO1981001455A1 (en) 1979-11-09 1980-11-10 Control of the atmosphere in an enclosure

Publications (1)

Publication Number Publication Date
DE3069231D1 true DE3069231D1 (en) 1984-10-25

Family

ID=3768329

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8080902162T Expired DE3069231D1 (en) 1979-11-09 1980-11-10 Control of the atmosphere in an enclosure

Country Status (7)

Country Link
US (1) US4485729A (en)
EP (1) EP0040213B1 (en)
JP (1) JPS56501496A (en)
AT (1) ATE9513T1 (en)
CA (1) CA1161140A (en)
DE (1) DE3069231D1 (en)
WO (1) WO1981001455A1 (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63111869A (en) * 1986-10-29 1988-05-17 株式会社　青木建設 Drain sterilizing autoclave apparatus
US4781107A (en) * 1986-12-09 1988-11-01 Nilsson Nils Johan Method and apparatus for maintaining a zero-pressure type plant
FI83134C (en) * 1987-12-18 1991-05-27 Ilmaterae Oy FOERFARANDE OCH ANORDNING FOER REGLERING AV LUFTSTROEMMAR OCH TRYCK I LUFTKONDITIONERING.
US4905579A (en) * 1988-03-11 1990-03-06 Dame Richard E Radon gas ventilation pump system and method
GB2222705A (en) * 1988-05-19 1990-03-14 Thomas Arthur Wisbey Wheeler Reduced pressure enclosure
US4905578A (en) * 1989-01-03 1990-03-06 Curtis Michael S Apparatus for ventilating controlled areas
US4995307A (en) * 1989-09-11 1991-02-26 Bobby Floyd Variable air volume ventilation system and method
US5145124A (en) * 1990-07-12 1992-09-08 Allied-Signal Inc. Fluid conditioning system and apparatus
DK166229C (en) * 1990-11-02 1993-08-16 Netavent As VENTILATION
CA2029545C (en) * 1990-11-09 1996-04-23 Jerry Edward Dick Continuous containment monitoring with containment pressure fluctuation
US5720658A (en) * 1992-02-11 1998-02-24 Belusa; Manfred L. Space pressurization control system for high containment laboratories
GB9317845D0 (en) * 1993-08-27 1993-10-13 Thermac Hire Ltd A method and apparatus for air-conditioning a working enclosure
US6033302A (en) * 1997-11-07 2000-03-07 Siemens Building Technologies, Inc. Room pressure control apparatus having feedforward and feedback control and method
ES2267170T3 (en) * 1998-04-14 2007-03-01 Laboratoires Genevrier PROCEDURE TO PREPARE CELL CROPS.
US6221160B1 (en) * 1999-02-03 2001-04-24 Taiwan Semiconductor Manufacturing Co., Ltd Method and apparatus for environmental control in a process chamber
DE10014497C1 (en) * 2000-03-23 2001-08-09 Daimler Chrysler Ag System for improving person's condition regulates air pressure in essentially closed occupied space so e.g. chaotic external air pressure fluctuations are kept away from occupied space
US20070190474A1 (en) * 2006-02-01 2007-08-16 Su Chao A Systems and methods of controlling systems
EP1947400B1 (en) * 2007-01-17 2013-10-02 Schako Klima Luft Ferdinand Schad KG Device and method for venting or removing air from a room
US9372009B2 (en) * 2007-08-17 2016-06-21 Siemens Industry, Inc. Pressure control with coarse and fine adjustment
JP5681553B2 (en) * 2011-04-22 2015-03-11 アズビル株式会社 Room pressure control system
CN106855284A (en) * 2015-12-08 2017-06-16 安徽东冠器械设备有限公司 A kind of laboratory pressure controlled system with self-regulation
US11435098B2 (en) * 2019-03-15 2022-09-06 Johnson Controls Tyco IP Holdings LLP System and method for access control using differential air pressure

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3078778A (en) * 1959-05-29 1963-02-26 United Aircraft Corp Flow control system for pressurized aircraft compartment
US3107974A (en) * 1959-06-01 1963-10-22 Reginald Robbins Method and systme for the prevention of the spread of infectious disease by airbornemicroorganisms
CH408577A (en) * 1961-08-29 1966-02-28 Weisheit Georg Solenoid valve that can be used as an actuator in a control circuit
DE1893694U (en) * 1963-09-26 1964-05-27 Friedrich Dipl Ing Ortmann SUCTION AIR FILTER WITH THE SUPPLY AIR AND EXHAUST AIR BLOWED UPPER FILTER BODIES.
US3695774A (en) * 1971-06-01 1972-10-03 Lyle F Martz Blower system and control system therefor
US3837571A (en) * 1972-11-15 1974-09-24 Dynamics Corp America Self-controlled air distribution system
DE2655855C3 (en) * 1976-12-09 1985-08-22 Alkem Gmbh, 6450 Hanau Automatic internal pressure control of gas-tight rooms
FR2432144A1 (en) * 1978-06-09 1980-02-22 Omia Soc AIR FLOW ADJUSTMENT DEVICE, PARTICULARLY FOR PAINTING CABINS

Also Published As

Publication number Publication date
JPS56501496A (en) 1981-10-15
ATE9513T1 (en) 1984-10-15
EP0040213A4 (en) 1982-01-08
EP0040213B1 (en) 1984-09-19
WO1981001455A1 (en) 1981-05-28
CA1161140A (en) 1984-01-24
EP0040213A1 (en) 1981-11-25
US4485729A (en) 1984-12-04

Similar Documents

Publication Publication Date Title
DE3069231D1 (en) Control of the atmosphere in an enclosure
ES8202686A1 (en) Method and apparatus for steam sterilization.
JPS57122135A (en) Air fuel ratio control method
ATE66308T1 (en) METHOD OF ADJUSTING AND/OR CONTROLLING THE PRESSURE IN A RECIPIENTS.
EP0346018A3 (en) Venting vacuum processing equipment
EP0084737A3 (en) Engine control system suitable for exhaust gas recirculation control
ES449255A1 (en) Method and apparatus for controlling volume air flow
JPS54141924A (en) Exhaust gas recycling device
AU1701492A (en) Method and device for exhausting gases or fumes from a metallurgical container and an electric furnace provided with said exhaust device
JPS5582302A (en) Duty ratio control method of solenoid valve
GB1126812A (en) A method of and apparatus for controlling the induced flow through a heat exchange unit of gases
JPS5381827A (en) Air fuel ratio controller
EP0485772A3 (en) Method for measuring grain size or bulle density, apparatus for carrying out the method, and control apparatus containing such an apparatus
JPS57200659A (en) Exhaust gas recirculating controlling device for internal-conbustion engine
JPS55134120A (en) In-furnace pressure control unit in converter waste gas treating apparatus
JPS5379124A (en) Air fuel ratio controller
JPS57134618A (en) Furnace pressure control system in thermoelectric power plant
GB2008805A (en) Valve for controlling respiratory gas
JPS57187528A (en) Controller for combustion of combustion furnace
JPS56131339A (en) Controlling method of supply air temperature in polished rice conditioning
JPS57110759A (en) Apparatus for controlling recirculation of exhaust gas of diesel engine
JPS5688920A (en) Operating method of power-regenerating turbine
JPS54203A (en) Automatic chacteristic-curve correction type fluid conveyor system operation control method
JPS57204739A (en) Air conditioning system
JPS56158810A (en) Method for control of flow rate in converter waste gas treatment device

Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee